Rolling, Torque , and Angular Momentum

Rolling, Torque , and Angular Momentum 1. A constant horizontal force of magnitude 10 N is applied to a wheel of mass 10 kg and radius 0.30 m as shown in the figure below. The wheel rolls smoothly on the horizontal surface and the acceleration of its center of mass has magnitude 0.60 m/s^2. ( a) what are the magnitude and ...continues

gravitation

A 905 kg test car travels around a 3.25 km circular track. If the magnitude of the force that maintains the car's circular motion is 2140 N, what is the car's tangential speed? Please show all work, anwser and formulas used. Thanks.

Gravitational force

Mars has a mass of about 6.4 x 10^23 kg, and its moon Phobos has a mass of about 9.6 x 10^15 kg. If the magnitude of the gravitational force between the two bodies is 4.6 x 10^15 N, how far apart are Mars and Phobos? Please show the work, answer and the formulas you used. Thanks!

gravitation

Tarzan tries to cross a river by swinging from one bank to the other on a vine that is 10.0 m long. His speed at the bottom of the swing, just as he clears the surface of the river, is 8.0 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 x 10^3 N. What is the largest mass Tarzan can have and make it saf ...continues

gravitation

A 2.00 x 10^3 kg car rounds a circular turn of a radius 20.0 m. If the road is flat and the coefficient of static friction between the tires and the road is 0.70, how fast can the car go without skidding? Please show the work, answer and the formulas you used. Thanks!

Elasticity

Young's modulus for bone is about 1.0 x 10^10 Pa. Bone can take only about a 1.0% change in its length before fracturing. a.) What is the maximum force that can be applied to a bone whose minimum cross sectional area is 3.0 cm^2? b.) estimate from what maximum height a 70 kg person (one weighing about 150lb) could jump ...continues

Simple Harmonic Motion

general equation of simple harmonic motion, x= A cos (wt + Ф0) , can be written in the equivalent form x = B sin wt + C cost wt. a) Find the expression for the amplitudes B and C in terms of the amplitude A and the initial phase angle Ф0. b) Interpret these expressions in terms of a phasor diagram.

Continuous Probability Distribution - Escape Velocities of Hydrogen Molecules

The surface of the sun has a temperature of about 5800K and consists largely of hydrogen atoms. We're given that the rms speed of a hydrogen atom at this temperature is 1.20*10^4m/s and the escape speed for a particle is 6.20*10^5m/s. Can appreciable quantities of hydrogen escape from the sun? Can any hydrogen escape? ...continues

2 convex lenses

Hello, I have a question for an algebra based physics course. Here goes, A convex lens of focal length 7.5 cm is placed 12 cm to the left of a convex lens with a focal length of 6.5 cm. An object is placed 10.0 cm to the left of the lens with a focal length of 7.5 cm. Find the location of the image and its character (e. ...continues

Physics

A convex lens of focal length 7.5 cm is placed 12 cm to the left of a convex lens with a focal length of 6.5 cm. An object is placed 10.0 cm to the left of the lens with a focal length of 7.5 cm. Find the location of the image and its character (e.g., real, inverted) (A ray diagram may prove to be helpful also).