Answer:
Explanation:
cable breaks and elevator falls a distance h
Friction force f is applied by the clamps
Before it hits the spring velocity of elevator is given by the work energy theorem i.e. work done by all the forces is equal to change in kinetic energy
Where ,
Answer:8.125 kg
Explanation:
Given
deceleration of elevator
suppose T is the tension in the cord
therefore net force on lamp is
direction of a and g is in the same direction
Answer:
m = 28.7[kg]
Explanation:
To solve this problem we must use the definition of kinetic energy, which can be calculated by means of the following equation.
where:
Ek = kinetic energy = 1800 [J]
m = mass [kg]
v = 11.2 [m/s]