A horizontal plank has a rectangular block placed on it. The plank starts oscillating vertically and simple harmonically with an amplitude of `40 cm`. The block just loses contact with the plank when the latter is at momentary rest. Thin :

A clock is performing SHM along a vertical line with amplitude of 40 cm on a horizontal plank. The block just lose the contact with plank when plank is momentarily at rest. Then, (Take, g=10m//s^(2) )

A plank with a small block on top of it is under going vertical SHM . Its period is 2 sec . The minium amplitude at which the block will separate from plank is :

A plank with a small block on top of it is under going vertical SHM . Its period is 2 sec . The minium amplitude at which the block will separate from plank is :

A plank with a small block on top of it is under going vertical SHM . Its period is 2 sec . The minium amplitude at which the block will separate from plank is :

A plank of mass 12 kg is supported by two identical springs as shown is Fig. The plank always remains horizontal. When the plank is pressed down and released it performs simple harmonic motion with time period 3 s. When a block of m is attached to the plank the time priod changes to 6 s. The mass of the block is

A plank of mass 12 kg is supported by two identical springs as shown is Fig. The plank always remains horizontal. When the plank is pressed down and released it performs simple harmonic motion with time period 3 s. When a block of m is attached to the plank the time priod changes to 6 s. The mass of the block is

A plank is being pushed on a frictionless horizontal floor with a constant velocity u=1.5m/s .When a block is gently placed on the plank,it slides for a while,acquires velocity of the plank and then moves together with the plank.If the agency pushing the plank has to do a work W = 11.25 J during the sliding of the block,find mass of the block in kg.

A thin plank of mass M and length l is pivoted at one end. The plank is releaed at 60^(@) from the vertical. What is the magnitude and direction of the force on the pivot when the plank is horizontal?