An elevator, hanging from a single cable, moves downward and is speeding up. Fri

Question

An elevator, hanging from a single cable, moves downward and is speeding up. Friction and air resistance are negligible. Which of the following statements is correct?

a)The tension on the cable is greater than the gravitational force on the elevator

b). The tension on the cable is equal to the gravitational force on the elevator.

c)The tension on the cable is zero.

d) The tension on the cable is less than the gravitational force on the elevator.

True or False: An object always moves in the direction of the net force acting on it.

True False

thank you

Explanation / Answer

1) d) The tension on the cable is less than the gravitational force on the elevator.

Beacuse, Fnet = m*g - T

m*a = m*g - T

T = m*g - m*a

2) False

a good example is vertically projected body.

the body has acceleration always downward but it moves up decreasung speed.

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