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An applied force of 20 N is used to accelerate an object to the right across a frictional surface. The object encounters 10 N of friction. Use the diagram to determine the normal force, the net force, the coefficient of friction (μ) between the object and the surface, the mass, and the acceleration of the object. (Neglect air resistance.)
Michael applies a 8 N rightward force to a 0.75 kg book to accelerate it across a table top. The coefficient of friction between the book and the tabletop is 0.610. Determine the acceleration of the book.
Determine the accelerations that result when a 20 N net force is applied to a 5 kg object and then to an 8 kg object.
A force of P N acting on a body of 5kg traveling with a velocity of 5ms-1 increases it velocity to 10ms-1. if the force acts in the direction of motion for a period of 5s, what is the value of P?
A 10Mg truck rolling at a constant speed of 30kph along a horizontal rail comes to an incline of slope of sin-1 0.1. Calculate how far it will roll us the slope before coming to a halt, (a) ignoring all resistive forces, and (b) assuming the rolling resistance is 5% of the normal reaction of the truck.
A 5kg weight whose motion is constrained by vertical guides is dropped from 0.5m onto a vertical aligned spring whose stiffness is kNm-1. how fast is the weight traveling when the spring has been compressed by 50mm?
The displacement (in meters) of a particle executing simple harmonic motion at any instant of time is
given by, y = 0.2sin2π(350t − 0.30). Calculate i) the amplitude, ii) wave velocity, iii) wave length,
iv) frequency.
What will be the electric field experienced by a test charge if q = 7.03 x 10^-6 C from a source charge q = 12 x 10^-6 C in a vacuum when the test charge is placed 0.25 m away from the other charge?
A 2.0kg mass fails 400cm.
(a) how much work was done on it by gravitational force?
(b) how much PEG did it lose?
(c) given that work is the transfer of energy where does that energy end up?
A 1200kg car going 30m/s applies its brakes and skids to rest. If the friction force between sliding tiresband pavement is 600N. How far does the car skids before coming tonrest.
