Mechanics | Relativity Answers

a block of mass 10kg on a rough horizontal surface is connected to all of mass M2=5kg by a light weight cord over a light weight friction less pully

A force of 120N at angle 53° of the horizontal applied to the block of mass 10kg the cofficent of kinetic friction b/n the surface and the block 0.3 then what is

The magnitude b/n the 2 blocks

The acceleration of the blocks

The tension b/n the 2 blocks

A toolbox with contents has a mass of 200kg and stands horizontal floor. The static frictional coefficient between the floor and toolbox is 0,4

1. Calculate the minimum horizontal force a handyman has to apply to make the toolbox move.

2. An electric drill and hammer (with combined mass of 25kg) is removed from the toolbox by the handyman. Calculate the new force necessary to move the toolbox

10. A 1500 kg yellow convertible is travelling south, and a 2000 kg red station wagon is travelling west. If the total momentum is of the system consisting of the two cars is 8000 kg.m/s directed at 30° west of south, what is the speed of each car?

Find the rotational inertia of 21.5 kilograms thin-walled cylindrical threshing drum of a modified palay thresher having a radius of 9 inches.

Find the rotational inertia of 21.5 kilograms thin-walled cylindrical threshing drum of a modified palay thresher having a radius of 9 inches.

Total mass 57.3 kg. Rides .64km in 14.6 min in constant speed. Aceleración is 9.8 m/s2 what is the kinetic energy?

In the Triwizard Tournament hosted by Hogwarts School, Harry Potter walks 1.5 m southeast, 2.5 m 60° west of south and finally 3.5 m straight south to locate the Triwizard Cup hidden in a massive hedge maze. Determine Potter’s final position relative to his starting point. 

A graph of position versus time for a certain particle moving along the x axis is shown in the figure below. Find the average velocity in the following time intervals. (The horizontal axis is marked in increments of 5 s and the vertical axis is marked in increments of 5 m.)

The rest mass of an electron is 9.1 x

10^-31 kg. What is the relativistic mass if its velocity is 55 % of the speed

of light?

What is the kinetic energy of an electron having a rest mass of 9.1 x 10^-31 kg traveling at 65% speed of light?