moving with a constant speed. The speed of the insect as seen from the ground is
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A molecule capable of viabrations is modeled as two point atoms of mass M connected by a spring. Initially molecule is not vibrating when it coilides elastically with a single atom of mass M as shown in fig. Mark the correct options
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Sep
A molecule capable of viabrations is modeled as two point atoms of mass M connected by a spring. Initially molecule is not vibrating when it coilides elastically with a single atom of mass M as shown in fig. Mark the correct options A strip of wood mass M and length l is placed on a [...]
Consider a hollow sphere of mass M and radius R resting on a smooth surface. A smaller sphere of mass m and radius r is Initialy held at position P within the bigger sphere. If the small sphere is now released, it rolls down through the inner surface of hollow sphere and finally stops at its bottom point Q. Then:
21
Sep
Consider a hollow sphere of mass M and radius R resting on a smooth surface. A smaller sphere of mass m and radius r is Initialy held at position P within the bigger sphere. If the small sphere is now released, it rolls down through the inner surface of hollow sphere and finally stops at [...]
An ideal spring is permanently connected between two blocks of masses M and m. The blocks-spring system can move over a smooth horizontal table along a straight line along the length of the spring as shown in Fig.The blocks are brought nearer to compress the spring and then released. In the subsequent motion,
21
Sep
An ideal spring is permanently connected between two blocks of masses M and m. The blocks-spring system can move over a smooth horizontal table along a straight line along the length of the spring as shown in Fig.The blocks are brought nearer to compress the spring and then released. In the subsequent motion, A strip [...]
Two small rings each of mass ‘m’ are connected to a block of same mass ‘m’ through inextensible light strings. Rings are constrained to move along a smooth horizontal rod. Initially system is held at rest (as shown in figure) with the strings just taut. Length of each string is ‘l’. The system is released from the position shown. Find the speed of the block (v) and speed of the rings (u) when the strings make an angle of theta = 60^(@) with vertical.
21
Sep
Two small rings each of mass ‘m’ are connected to a block of same mass ‘m’ through inextensible light strings. Rings are constrained to move along a smooth horizontal rod. Initially system is held at rest (as shown in figure) with the strings just taut. Length of each string is ‘l’. The system is released [...]
Consider two skaters A and B initially at rest on ice -(friction is negligible) with A holding a ball. A has greater mass than B and the ball has some significant mass. A throws the ball to B. B catches it and throws it back to A who catches it again. The magnitudes of the skater’s (excluding ball) final velocities, A momentum and kinetic energies (denoted below as v, p and K respectively) are related as
21
Sep
Consider two skaters A and B initially at rest on ice -(friction is negligible) with A holding a ball. A has greater mass than B and the ball has some significant mass. A throws the ball to B. B catches it and throws it back to A who catches it again. The magnitudes of the [...]
Two persons A and B of weight 80 kg and 50 kg respectively are standing at opposite ends of a boat of mass 70 kg and length 2 m at rest. When they interchange their positions then displacement of the centre of mass of the boat will be :-
21
Sep
Two persons A and B of weight 80 kg and 50 kg respectively are standing at opposite ends of a boat of mass 70 kg and length 2 m at rest. When they interchange their positions then displacement of the centre of mass of the boat will be :- A strip of wood mass M [...]
A particle mass m = 0.1 kg is released from rest from a point A of a wedge of mass M = 2.4k g free to slid e on a frictionless horizontal plane. The particle slides down the smooth face Ab of the wedge. When the velocity of the wedge is 0.2 m/s the particle in m/s relative to the wedge is
21
Sep
A particle mass m = 0.1 kg is released from rest from a point A of a wedge of mass M = 2.4k g free to slid e on a frictionless horizontal plane. The particle slides down the smooth face Ab of the wedge. When the velocity of the wedge is 0.2 m/s the particle [...]
Two identical particles A and B of mass m each are connected together by a light and inextensible string of length l. The particle are held at rest in air in same horizontal level at a separation I. Both particles are released simultaneously and one of them (say A) is given speed V0 vertically upward. Choose the correct options (s). Ignore air resistance.
21
Sep
Two identical particles A and B of mass m each are connected together by a light and inextensible string of length l. The particle are held at rest in air in same horizontal level at a separation I. Both particles are released simultaneously and one of them (say A) is given speed V0 vertically upward. [...]
Two blocks of masses m1 = 2 kg and m2 = 4 kg are moving in the same direction with speeds v1 = 6 m/s and v2 = 3 m/s, resp ectively on a frictionless surface as shown in the figure. An ideal spring with spring constant k=30000N/m is attached to the back side of m2. Then the maximum compression of the spring after collision will be
21
Sep
Two blocks of masses m1 = 2 kg and m2 = 4 kg are moving in the same direction with speeds v1 = 6 m/s and v2 = 3 m/s, resp ectively on a frictionless surface as shown in the figure. An ideal spring with spring constant k=30000N/m is attached to the back side of [...]
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A strip of wood mass M and length l is placed on a smooth horizontal surface. An insect of mass m starts from rest at one end of the strip and walks to the other end in time t ,
moving with a constant speed. The speed of the insect as seen from the ground is ,
Two blocks of masses m1 = 2 kg and m2 = 4 kg are moving in the same direction with speeds v1 = 6 m/s and v2 = 3 m/s ,
A trolley is moving horizontally with a velocity of v m/s w.r.t. earth. A man starts running in the direction of motion of trolley from one end of trolley with a velocity 1.5v m/s w.r.t. the trolley. After reaching the opposite end, the man turns back and continues running with a velocity of1.5v m/s w.r.t. trolley in the backward direction. If the length of the trolley is L, then the displacement of the man with respect to earth, measured as a function of time, will attain a maximum value of
21
Sep
A trolley is moving horizontally with a velocity of v m/s w.r.t. earth. A man starts running in the direction of motion of trolley from one end of trolley with a velocity 1.5v m/s w.r.t. the trolley. After reaching the opposite end, the man turns back and continues running with a velocity of1.5v m/s w.r.t. [...]