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A box, of mass 8 kg, is on a rough horizontal surface.
A string attached to the box is used to pull it along the surface.
The string is inclined at an angle of 40° above the horizontal.
The tension in the string is 50 newtons.
As the box moves a distance of x metres, its speed increases from 2ms1 to 5ms-1
The coefficient of friction between the box and the surface is 0.4
By using an energy method, find x.
An object is vertically projected at u velocity ..After t time another one is projected at the same velocity. Show the meeting time is (t/2 + u/g) after the first object projected .
Two bodies of masses M1 and M2 have equal energies.If P1 and P2 are their respective momentum,compute P1/P2.
A block slides down an inclined ramp such that it speeds up by 5 m/s/s. The ramp is not frictionless. The ramp makes an angle of 53° with respect to the horizontal. The mass of the block is 50 kg.
A. Draw a free-body diagram for the block.
B. Find the magnitude of the gravitational force exerted on the block. Show your work. (You may use g»10m/s2).
C. Draw an arrow on the diagram above to indicate the direction of the acceleration of the block. If the acceleration is zero, please state that explicitly.
D. Find the magnitude of the normal force exerted on the block by the ramp. Show your work and indicate which of Newton’s laws you used to find your answer.
E. Use Newton's 2nd Law to find the magnitude of the frictional force exerted on the block by the ramp. Show your work.
F. Find the coefficient of kinetic friction between the block and the ramp. Show your work.
We have a Cavendish balance set up with two spheres (one small and one large) that are five centimeters apart of masses m = 1 g and m0 = 500 m, respectively. Suppose these design is placed at a point in space far removed from all other bodies. ,→ What is the acceleration a of the body m, and the acceleration a 0 of the body m0 ? [15] ,→ Is this a constant acceleration problem? Explain why or why not!
how do you derive the dimensional formular of absolute viscosity
Consider the 2-dimensional phase space R^2. Find the most general canonical transformation of this phase space,of the form Q=Q(q,p)=f(q)+g(p)
P=P(q,p)=c[f(q)+h(p)] where f,g and h are differentiable real-valued functions
1200kg car is traveling at a velocity of 20m/s the car then does 3000W of power for 20 seconds what is the change in momentum?
A block of mass m (initially at rest) is dropped from a height h landing onto a spring with spring/force constant k. Determine the maximum distance y that the spring will be compressed?
A crane boom 10 m long, weighing 870 N and having its center of gravity 3m from the bottom, is hinged at the lower end and makes an angle of 30° with the vertical. It is held in position by a horizontal cable fastened at the upper end. The boom supports a 4350-N load at its upper end. Find the tension in the cable.
