A 72kg cement block rides a crane to reach the upper floor of the building. What force does the bucket of the lift exert on the surgeon when the bucket is moving upward at a steady 2.3 m/s?
I don't have an acceleration so what do i do?
To calculate the force exerted by the bucket of the lift on the cement block, we need to use Newton's second law of motion, which states that Force = mass × acceleration.
However, in this case, since you don't have the acceleration of the lift, we need to use another approach to find the force.
Given the information provided, we can use the concept of equilibrium. When the bucket is moving upward at a steady speed, it means that the net force acting on the cement block is zero.
In this situation, the force applied by the bucket of the lift equals the downward force acting on the cement block, which is its weight.
The weight of an object is given by the formula W = mass × gravitational acceleration (g).
The gravitational acceleration is approximately 9.8 m/s² on Earth.
Given that the mass of the cement block is 72 kg, we can calculate the weight:
W = mass × gravitational acceleration
W = 72 kg × 9.8 m/s²
W = 705.6 N
Therefore, the force exerted by the bucket of the lift on the cement block, and consequently on the surgeon, is 705.6 Newtons in the upward direction.