Assume that the cart is free to roll without friction and that the coefficient of static friction between the block and the cart is μs. derive an expression for the minimum horizontal force that must be applied to the block in order to keep it from falling to the ground. express your answer in terms of acceleration of gravity g and some or all of the variables m, m, and μs.

Explanation:

Given

Trolley of mass M is free to roll without friction

coefficient of friction between trolley and mass m is

Force F is applied on mass m

Acceleration of the system is

friction Force will balance weight of block

friction force

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

found in the nucleus

has mass of one amu