Question

An upward force of 1 2 104N acts on an elevator of mass 2 0 103kg. Calculate the acceleration of the elevator. Take g=9 8ms−2

Answer 1

An upward force of 1 2 104N acts on an elevator of mass 2 0 103kg. Calculate the acceleration of the elevator. Take g=9 8ms−2

3 8m s2 downward
4 7m s2 upward

3 8m s2 upward

4 7m s2 downward

Answer 2

A ball of mass 50g tied to the end of a 50cm inextensible string is whirled around in a vertical circle. find the tension in the string when the ball is at the top of the circle. take g = 10m/s