A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at
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A wooden plank of mass M and length L is floating in still water. A persons of mass m starts at one end of the plank and reaches to other end other end in time t0, moving with a constant speed. Choose the correct option. (i) The speed of the person as seen from the ground is smaller than L/t0. (ii) The speed of the plank as seen from the ground is (m/m+M)L/t0. (iii) The speed of the plank as seen from the ground is (M/m+M)L/t0. (iv) The total K.E. of the system is 1/2(m+M)(Lt/0)^2.
22
Oct
A wooden plank of mass M and length L is floating in still water. A persons of mass m starts at one end of the plank and reaches to other end other end in time t0, moving with a constant speed. Choose the correct option. (i) The speed of the person as seen from the [...]
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A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at ,
A wooden plank of mass M and length L is floating in still water. A persons of mass m starts at one end of the plank and reaches to other end other end in time t0 ,
Two particles A and B of masses 2m and m are placed on a smooth surface at separation d. They move towards each other due to the mutual attractive force. (i) The particles will meet at distance d/3 from the initial position of mass 2m. (ii) The speed of A will be half of speed of B until the particles collide (excluding the initial speed). (iii) The distance covered by B is always double that covered by A until the particles collide. (iv) The velocity of center of mass is always zero.
22
Oct
Two particles A and B of masses 2m and m are placed on a smooth surface at separation d. They move towards each other due to the mutual attractive force. (i) The particles will meet at distance d/3 from the initial position of mass 2m. (ii) The speed of A will be half of speed [...]
A boy (massof40kg) is standing at one end of a boat (mass of 60 kg) in still water. The length of the boat is 10m and the boy takes 2s to reach at other end of boat moving with constant speed. Assuming no friction between the boat and the water. (i) The distance covered by the boat is 4m (ii) The distance covered by the boy with respect to the ground is 6m. (iii) The velocity of the boy with respect to the ground is
22
Oct
A boy (massof40kg) is standing at one end of a boat (mass of 60 kg) in still water. The length of the boat is 10m and the boy takes 2s to reach at other end of boat moving with constant speed. Assuming no friction between the boat and the water. (i) The distance covered by [...]
A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at
22
Oct
A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end the centre of gravity of the rod from that end will be at A rod of length is 3m and its mass per unit length is directly proportional to distance x from one end [...]