A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2
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Two identical blocks A and B are placed on two inclined planes as shown in figure. Neglect resistance and other friction. Read the following statements and choose options. Statement I: The kinetic energy of A on sliding to J will be greater than the kinetic of B on sliding to O. Statement II: The acceleration of A will be greater than acceleration of B when both are released on the inclined plane. Statement III: The work done by external agent to move the block slowly from position B to O is negative.
20
Oct
Two identical blocks A and B are placed on two inclined planes as shown in figure. Neglect resistance and other friction. Read the following statements and choose options. Statement I: The kinetic energy of A on sliding to J will be greater than the kinetic of B on sliding to O. Statement II: The acceleration [...]
A particle is released from the top of two inclined rough surface of height h each. The angle of inclination of the two planes are 30^∘ and 60^∘ respectively. All other factors (e.g. coefficient of friction , mass of the block etc) are same in both the cases. Let K1 and K2 be the kinetic energy of the particle at the bottom of the plane in two cases. Then
20
Oct
A particle is released from the top of two inclined rough surface of height h each. The angle of inclination of the two planes are 30^∘ and 60^∘ respectively. All other factors (e.g. coefficient of friction , mass of the block etc) are same in both the cases. Let K1 and K2 be the kinetic [...]
A block of 4kg mass starts at rest and slides a distance d down a friction less incline ( angle 30^∘) where it runs into a spring of negligible mass. The block slides an additional 25 cm before it is brought to rest momentarily by compressing the spring. The force constant of the spring is 400Nm^−1. The value of d is (take g=10ms^−2)
20
Oct
A block of 4kg mass starts at rest and slides a distance d down a friction less incline ( angle 30^∘) where it runs into a spring of negligible mass. The block slides an additional 25 cm before it is brought to rest momentarily by compressing the spring. The force constant of the spring is [...]
An object of mass m slides down a hill of arbitrary shape and after travelling a certain horizontal path stops because of friction. The total vertical height descended is h. The friction coefficient is different for different segments for the entire path but is independent of the velocity and direction of motion. The work that a tangential force must perform to return the object to its initial position along the same path is
20
Oct
An object of mass m slides down a hill of arbitrary shape and after travelling a certain horizontal path stops because of friction. The total vertical height descended is h. The friction coefficient is different for different segments for the entire path but is independent of the velocity and direction of motion. The work that [...]
A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2 , where k is a constant. The power delivered to the particle by the force acting on it is
20
Oct
A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2 , where k is a constant. The power delivered to the particle by the force acting on it is A particle of mass m is moving in a [...]