Question: A man lifts a 1.8 kg stone vertically.
At some instant of time t1 during the beginning of the lift, the stone is moving upwards and speeding up by 0.5 m/s per second. The following questions are all at time t1.
a) What is the acceleration of the stone.
b) What is the weight of the stone.
c) What is the total force.
d) What is the force of the stone by the mans hand and vice versa!