Question

The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes it 0.90 s to reach the floor. What is the mass m of the other block? The pulley has no appreciable mass or friction.

a)54 kg
b)42 kg
c)48 kg
d) 60 kg

Answer 1

B: 42 KG

Since the pulley has no appreciable mass or friction, the tension in the rope supporting the second block is also 413 N. The mass of the second block can be calculated using the equation F = ma.

413 N = m(9.8 m/s^2)

Solving for m:

m ≈ 42 kg