Mechanics
Not what you're looking for?
1. A person standing on the floor is leaning against a wall. The wall exerts on the person a force of 100 N in the horizontal direction. What other horizontal force keeps the person in equilibrium?
2. Torque is measured in Newton meters. Work can also be measured in Newton meters. What are the quantities measured in meters in the two cases?
3. What is the advantage of having gears in a bicycle?
4. A person is doing strength training of knee extensor muscles. He sits on a bench, with a weight attached to his ankle. In what position of the leg will the gravitational torque about the knee joint be maximum?
Purchase this Solution
Solution Summary
The expert examines mechanics of torque and horizontal forces.
Solution Preview
1. Frictional force between the feet of the man and the floor acts on the man towards the wall whereas the 100 N force exerted by the wall acts away from the wall. For equilibrium these two horizontal forces must be equal.
2. In case of work, the displacement of the object on which the force is acting is ...
Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics
This quiz is designed to test and improve your knowledge on Classical Mechanics.
The Moon
Test your knowledge of moon phases and movement.
Introduction to Nanotechnology/Nanomaterials
This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.
Intro to the Physics Waves
Some short-answer questions involving the basic vocabulary of string, sound, and water waves.
Basic Physics
This quiz will test your knowledge about basic Physics.