Hi How do I go about proving that a value for energy does not decay during the process of motion? Thanks

Hi How do I go about proving that a value for energy does not decay during the process of motion? Thanks

Hi I have been asked to find the potential V(x) of the force F(x)=k(x-L). Can anyone help me with this please? Thanks

Hi I have found the vector for the acceleration of a particle in 3d, however I have been asked now to give its component that is tangential to the trajectory of the particle. Can I...

Hi I have been given the position vector of a particle, and have then differentiated this to get the velocity vector for the patricle. I have now been asked to find the speed, but am...

The particle is moving in the x-axis under the action of a conservative force with a potential energy V (x).

At time t0 = 0, a particle P1 of mass m is projected vertically from the ground with speed v0 > 0. If no collisions occur, this particle would reach its maximum height h1 at time t = t1. At time...

A car can round a banked curve at an 84 m radius and a maximum speed of 16 m/s without relying on friction. What is the angle does the car bank when it turns?

A .25 kg object is attached to a 0.80m string. The object is pulled to a point so that the string makes an angle θ from the vertical. It is then released. At the bottom of the object's path,...

I can't seem to solve this question... A ball is swung in a horizontal circle so that the string makes a 26º with the pole it is attached to. What is the centripetal acceleration?

Two mechanics worked on a car. The first mechanic worked for 15 hours, and the second mechanic worked for 5 hours. Together they charged a total of $1225 . What was the...

If S is the circumcentre of the triangle ABC and if forces act along SA,SB,SC respectively proportional to BC,CA,AB. Show that their resultant passes through the incentre of the triangle.

e.g: for the period of a pendulum?

A car of mass 1000 kg has its speed reduced from 81 km/h to 54 km/h by brakes producing a force of 1250 N. How long does this take? Determine the work done by the brakes on the car. Determine...

When i apply F1=500N for 5sec and 600 for 10 sec, what will be the effective forces?

Find the maximum angle of deflection from verticle to which the string will be deflected by conservation of energy principle.

On stricking the bullet gets embedded into the block of mass M amd tbe system ( bullet+ pendulum) swings up to a maximum height h. Show that u= ((m+M)/m)* sqrt of 2gh

A 2.5 kg ball is suspended over a table that is attached to a 3.5 kg block that is on the table. The friction coefficient of the table is 0.25 What is the initial acceleration of the...

What is the speed of: a) upper part of the caterpillar, b) lower part of the caterpillar, c) caterpillar link which, in the considered moment, moves vertically?

A machine component of mass 14kg is constrained to move only in the direction of the slide as shown. It is subject to the force F= 350N as shown. Neglecting effects of static weight, calculate its...

An ice hockey puck is struck from one end of the rink to the other end of length 27m. The initial speed is 6m/s and the puck rebounds of the boundary fence on the other side at a speed 0.75 times...