3. A 15-kg rock is dropped from rest on the earth and reaches the ground in 1.75 s. When it is dropped from the same height on Saturn's satellite Enceladus, it reaches the ground in 18.6 s. (a) What is the acceleration due to gravity on Enceladus? (b) How long will it take for the rock to reach the ground on Earth if it was released 100 m above the Earth's surface? (e) Same question in (b) but in Enceladus.

Q: Q1) An elevator car has a mass of (1600 kg) and is carrying passengers having a combined mass of…

A: Givenmass of elevator M'=1600kgmass of passengers m=200kgfriction force f=4000N

Q: A diver of 50 kg jumps from a platform 20m high into a pool. If the diver decelerates at a constant…

A:

Q: A carton is given a push across a horizontal surface. The carton has a mass m, the push gives it an…

A: Given: The initial speed is v=2.30 m/s. The coefficient of kinetic friction is μk=0.145. (a) As…

Q: As shown below, a rock rests on a platform and is connected to a pickup by a cable. The pickup has a…

A: Draw a free body diagram showing the platform, rock, and cable. Here, T is the tension in the…

Q: Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50…

A: Given:k=50 N/mm=50 kgθ=30°x=0.3 mF=50 Nμ=0.3

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.