Questions asked
Eduard Sanchez
Numerade educator
An object is being held against a wall, initially at rest. The coefficient of friction is 0.6. The object has a mass of 2 kg and you are holding it with a force of 30N against the wall. How long will the object take to slide down 1m (vi = 0 m/s)?
Vishal Gupta
A pump that is moving water up a tower has a power rating of 400W. How long would it take a molecule of water to travel the height of the tower If it is 91% efficient, and it is moving 80L of water up a height of 20m with a constant velocity?
A spring has a K value of 100 N/m. A 100g mass is dropped from a height of 20 cm unto an uncompressed spring. How much will the spring compress?
A ball falls off a 10 m ledge and hits the ground with a velocity of 10 m/s. What is the work done by friction? (5).....Mass of ball is 10 kg
Arjun Singh
Darshan Maheshwari
A person is pushing a lawnmower at an angle of 45 degrees with a force of 15 N. If the lawnmower has a mass of 6 kg and has a coefficient of friction of 0.1, what is the gain in kinetic energy of the lawnmower after 10 seconds?