Cengage NEET by C.P Singh

A projectile is projected with velocity kve​ in vertically upward direction from the ground into the space (ve​ is escape velocity and k A projectile is projected with velocity kve​ in vertically upward direction from the ground into the space (ve​ is escape velocity and k September 14, 2020 Category: Cengage NEET by C.P Singh [...]

A particle is projected vertically upwards with a velocity v = root gR​, where R denotes the radius of earth and g is acceleration due to gravity of the surface of earth. The maximum height ascended by the particle is A particle is projected vertically upwards with a velocity v = root gR​ where R [...]

A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by an external agent) in doing this is A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by [...]

If the acceleration due to gravity at the surface of the earth is g, the work done in slowly lifting a body of mass m from the earth’s surface to a height R equal to the radius of the earth is If the acceleration due to gravity at the surface of the earth is g [...]

In the previous problem, the minimum speed with which the body must be thrown from the surface of the earth so as to reach a height of R/4 is In the previous problem the minimum speed with which the body must be thrown from the surface of the earth so as to reach a height [...]

The radius of the earth is R and acceleration due to gravity at its surface is ‘g’. If a body of mass ‘m’ is sent to a height of R/4 from the earth’s surface, the potential energy increases by the potential energy increases by The radius of the earth is R and acceleration due to [...]

The mean radius of the earth’s orbit around the sun is 1.5×10^11 m and that of the orbit of mercury is 6×10^10 m. The mercury will revolve around the sun is nearly The mean radius of the earth's orbit around the sun is 1.5×10^11 m and that of the orbit of mercury is 6×10^10 m. [...]

If the distance between the earth and the sun becomes half its present value, then the number of days in one year would have been If the distance between the earth and the sun becomes half its present value then the number of days in one year would have been September 14, 2020 Category: Cengage [...]

The earth E moves in an elliptical orbit with the sun S at one of the foci as shown in figure. Its speed of motion will be maximum at the point The earth E moves in an elliptical orbit with the sun S at one of the foci as shown in figure. Its speed of [...]

Figure shows the elliptical path of a planet about the sun. The two shaded parts have equal area. If t1​ and t2​ be the time taken by the planet to go from a to b and from c to d respectively. Figure shows the elliptical path of a planet about the sun. The two shaded [...]