If a cyclist moving with a speed of 4.9

Asked by admin @ 17/08/2021 in Physics viewed by 279 People

If a cyclist moving with a speed of 4.9 m/s on a

level road can take a sharp circular turn of radius4 m, then the coefficient of friction between thecycle tyres and road is(1) 0.51(2) 0.41(3) 0.71(4) 0.61

Answered by admin @ 17/08/2021

Explanation:

v = 4.9 m/s, r=4 m, g = 9.81

coefficient of friction = v^2/(r*g)

= (4.9^2)/(4*9.81) = 0.61

option 4 is correct

An automobile moving at a speed of 72km h

Asked by admin @ 23/08/2021 in Physics viewed by 317 persons

an automobile moving at a speed of 72km h reaches the foot of a smooth incline when the engine is switched off. how much distance does the automobile go up …

When an automobile moving with a speed of 36

Asked by admin @ 20/08/2021 in Physics viewed by 344 persons

When an automobile moving with a speed of 36 km/hr reaches an upward inclined road of angle 30 degree, its engine is switched off. If the coefficient of friction is …

A conveyor belt is moving at a constant speed

Asked by admin @ 17/08/2021 in Physics viewed by 298 persons

A conveyor belt is moving at a constant speed of 2m/s.A box is gently dropped on it.The coefficient of fric9between

Body a of mass 4m moving with speed u

Asked by admin @ 17/08/2021 in Physics viewed by 310 persons

Body A of mass 4m moving with speed u collides with another body B of mass 2m,at rest.the collision is head on and elastic in nature.after the collision the fraction …

A ball is moving with speed 20m s collides

Asked by admin @ 16/08/2021 in Physics viewed by 301 persons

a ball is moving with speed 20m/s collides with a smooth surface as shown in fif. the magnitude of change in velocity of the ball will be

A bullet moving with a speed of 100m s

Asked by admin @ 16/08/2021 in Physics viewed by 325 persons

a bullet moving with a velocityof 100m/s can just penetrate two planks of equal thickness. thenumber of such planks penetrated by the same bullet when the velocity is doubled will …

A motorcycle moving with a speed of 5m s

Asked by admin @ 12/08/2021 in Physics viewed by 395 persons

a motorcycle moving with a speed of 5m/s obtains to an acceleration of 0.2m/s .calculate the speed of the motorcycle after 10sec and the distance travelled by it in this …

When the speed of a moving body is doubled

Asked by admin @ 11/08/2021 in Math viewed by 435 persons

When the speed of a moving body is doubled what will be the effect on its kinetic energy?

A car moving with a speed of 50km hr

Asked by admin @ 11/08/2021 in Physics viewed by 327 persons

a car moving with speed of 50 km/hr,can be stopped by brakes after at least 6m. if the same car is moving at a speed of 100km/hr,the minimum stopping distance …

An object moving with a speed of 6.25

Asked by admin @ 31/08/2021 in Physics viewed by 295 persons

An object moving with the speed of 6.25 m/s is decelerated at a rate given by dv/dt = -2.5 √v where v is the instantaneous speed . the time taken …

The speed time graph of a particle moving along

Asked by admin @ 13/08/2021 in Physics viewed by 375 persons

The speed time graph of a particle moving along a fixed direction is shown in the figure below. Obtain the distance travelled by the particle between (a) t = 0 …

A cyclist is riding with a speed of 27

Asked by admin @ 12/08/2021 in Physics viewed by 239 persons

Question 4.31 A cyclist is riding with a speed of 27 km/h. As he approaches a circular turn on the road of radius 80 m, he applies brakes and reduces …

A 12 kg sled is moving at a speed

Asked by maham237 @ 23/02/2021 in Physics viewed by 415 persons

A 12-kg sled is moving at a speed of 2.0 m/s. At which of the following speeds will the sled have twice as much kinetic energy? A. 2.8 m/s B. …

A meteorite of mass 1500 kg moves with a speed of 0.700 c . find the magnitude of its momentum p.

Asked by maham237 @ 25/12/2020 in Physics viewed by 360 persons

A. A meteorite of mass 1500kg moves with a speed of 0.700c . Find the magnitude of its momentum p.Express your answer in kilograms times meters per second to three …

Slow moving vehicles that travel at a speed less than

Asked by maham237 @ 24/12/2020 in Physics viewed by 355 persons

Slow moving vehicles that travel at a speed less than ___ mph will have an orange reflective triangle with red around the edges on the rear of the vehicle that …