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Dynamics (Forces and Newton's Laws of Motion)

Forces and Newton's Laws of Motion

Forces and Newton's Laws of Motion

Dynamics Principles
Using Newton’s Laws

Using Newton’s Laws

Dynamics Principles
A pulley has a radius of 45 cm and a moment of inertia of 0.15 kg.m2. A string is wrapped around the pulley, and a 25-g mass is hung from the string on one side of the pulley. Calculate the magnitude of the angular acceleration of the pulley.
Two mountains are 1.00 km apart. If their masses are identical (2.00 × 1010 kg) what is the force due to gravity between the mountains?
An 82 kg couch is being pushed with a force of 56N at an angle of 40 degrees above horizontal. If the coefficient of friction between the couch and the floor is 0.051, what is the acceleration of the couch? Be sure to include free body diagrams in your re
A satellite orbits the Earth at a distance of 200 km. If the mass of the Earth is 6.0 X 10^24 kg and the Earths radius is 6.4 X 10^6 m, what is the satellites speed?
A 1000-kg car experiences a centripetal force of 1.8 X 10^5 N while making a turn. The car is moving at a constant speed of 30 m/s. What is the radius of the turn?
An 11kg box is being pushed with an applied force of 1.50 x 10^2 N up a frictionless ramp inclined at 27 degrees to the horizontal. What is the acceleration of the box?
A soldier fires a musket with a barrel that is 1 m in length. The gases from the exploding gunpowder exert a constant net force of 50 N on a 0.010-kg bullet as it travels through the musket barrel. What is the bullets velocity
A box of unknown mass (m) slides down a plane inclined at an angle (0). The plane has a coefficient of friction (µ). Which of the following expressions would you use to calculate the rate of acceleration (a)?
A 10-kg crate is on a plane that is inclined at an angle of 45°. The coefficient of friction is 0.1, and the downward direction is positive. What is the approximate rate of the boxs acceleration?
An ice skater skates around a circular rink with a diameter of 20 m. If it takes her 62.8 s to go around the rink once, what is the coefficient of friction of the ice?

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