A mass of 0.5 kg is wheighd on abalance at the top of a tower 20 m high. The mass is then suspended from the pan of the balance by afine wire 20 m long and is reweighd. Find the change in weight. Assume that the radius of the earth is 6400 km

When weighed on a balance at the top of a cliff 30 m high, weight of an object of mass 0.5 kg is different than that weighted near the foot of the cliff. Calculate the change in weight. Take, Radius of the earth = 6,400 km

A transmitting antenna of height 25 m is fitted at the top of a tower of height 20m. What is the height of the receiving antenna from ground level if the maximum distance between transmitting antenna and receiving antenna on ground is 56 km. Radius of earth = 6400 km.

A uniform rod of length 200cm and mass 500g is balanced on a wedge placed at 40 cm mark. A mass of 2Kg is suspended from the rod at 20cm and another unknown mass m is suspended from the rod at 160cm mark as shown in figure. Find value of m such that the rod is in equilibrium.

A cord of length 64 m is used to connected a 100 kg astronaut to spaceship whose mass is much larger than that of the astronuat. Estimate the value of the tension in the cord. Assume that the spaceship is orbiting near earth surface. Assume that the spaceship and the astronaut fall on a straight line from the earth centre. the radius of the earth is 6400 km .

A cord of length 4 m is used to connect a 100 kg astronaut to spaceship whose mass is much larger than that of the astronaut. Estimat the value of the tension in the cord. Assume that the spaceship is orbiting near earth surface. A ssume that the spaceship and th eastronaut fall on a straight line from the earth centre. The radius of the earth is 6400 km.

The radius of the earth is 6400 km and g=10m//sec^(2) . In order that a dody of 5 kg weight zero at the equator, the angular speed of the earth is

A person jumps 4 m on the surface of the earth. How high will he be able to jump on the surface of a planet of radius 3200 km, having mass same as that of earth? (Radius of earth = 6400 km)

The leaning tower of Pisa is 45 m high. A mass of 4 kg is drow from the. top Calculate its potential eneigy at the top

A man is moving away from a 40-m high tower at a speed of 2 m/s. Find the rate at which the angle of elevation of the top of the tower is changing when he is at a distance of 30 metres from the foot of the tower. Assume that the eye level of the man is 1.6 m from the ground.

Aparticle is projected from the surface of the earth with an intial speed of 4.0 km//s .Find the maximum height attained by the particle. Radius of earth = 6400km g = 9.8 m//s^(2) .