Final answer:
To analyze a suspended 20 kg crate, we need to calculate its weight using the gravity equation W = mg and, if moving, the energy or forces needed based on potential energy and friction calculations.
Step-by-step explanation:
When considering a 20 kg crate that is suspended from a fixed hoist, we need to calculate the force exerted on the crate due to gravity, also known as its weight. This is found using the formula W = mg, where W is the weight, m is the mass of the crate, and g is the acceleration due to gravity. Assuming a gravitational acceleration of approximately 9.81 m/s^2, the weight of the crate would be 20 kg × 9.81 m/s^2 = 196.2 N. This force represents the tension in the hoisting cable while the crate is at rest.
If the crate were to be moved, the energy required to lift it to a specific height can be calculated using the potential energy formula PE = mgh. Additionally, if there is a frictional force present when moving the crate horizontally, the force needed to overcome this friction would need to be calculated considering the coefficient of kinetic friction.