Mechanics | Relativity Answers

in how long will a leopard cover a distance of 2.1 km if the average speed of the animal is 28m / s?

The car moves at a speed of 25km / h. How far does it travel in 1 s?

You found a treasure map and it said: à ¢ € œ Start at the well, go 100m straight south, then 30m 40 degrees north of west, then 25m straight east and finally 45m 75 degrees south of east.à ¢ €  How far from the well and in what direction is the hidden treasure? Use graphical method. Verify your answer in component method.

An ice skater starts spinning at a rate of 1.5 rev s-1 with arms extended. He then pulls

his arms in close to his body, resulting in a decrease of his moment of inertia to three

quarters of the initial value. What is the skater’s final angular velocity?

A mattress contains 1200 identical springs

A person lies on the mattress and the spring compress

the mean force on each spring in the mattress is 0.49N

calculate the mass of the person

gravitational field strength=9.8N/kg

A vertical spring (ignore its mass), whose spring stiffness constant is 950 N m^-1

is attached to a table. The spring is compressed down 15 cm and a 300 g ball

placed on it. The spring is then released and the ball flied off vertically. Determine the maximum height reached by the ball.

Calculate the force of gravitation between the Earth and the Sun is given that the mass of the earth is equal to 6 x 10 raise to 24 kg and of the sun is equal to 2 x 10 raise to 30 kg the average distance between the two is 1.5 x 10 raise to 20

Determine the forces couple system at 0 which is equivalent to the two forces applied to the shaft AoB. Is R perpendicular to Mo?

A big dumb bell is prepared by using a uniform rod of mass 40gm and length 20cm , two identical sphere of mass 20gm and radius 10cm reach at two ends of rod calculate moment of inertia of dumb bell when rotated about axes passing through it's centre and perpendicular to length

The portion of a bridge truss is subjected tp several loads for the loading shown, determine the location in the x-2 plane through which the resultant passed.