Étiquette : NEET PHYSICS
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Cyclist Sharp Turn: Friction and Speed Impact
Question: A cyclist speeding at 18 Kmh-1 on a level road takes a sharp turn of radius 3 m without reducing the speed.The coefficient of friction between the tyre and the road is 0.1.Will the cyclist slip while taking the turn? Solution: Cyclist sharp turn Centripetal Force: Centripetal force acts inwards pulling the cyclist towards…
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Optimum and Maximum Speed of Race-car on 15 degree Banked Racetrack
Question: A circular racetrack of radius 300 m is banked at an angle of 15o. If the coefficient of friction between the wheels of a race-car and the road is 0.2 .What is the Solution: Optimum and maximum speed of race car Banked at an angle 0f 15o Optimum speed of the race-car: The horizontal…
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Determining Maximum Horizontal Distance of a Projectile
Question: The ceiling of a long hall is 25 m high.What is the maximum horizontal distance that a ball thrown with a speed of 40 ms-1 can go without hitting the ceiling of the hall? Solution: Calculating the maximum horizontal distance Projectile motion image: Maximum height of the projectile: Maximum height of a projectile is…
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Finding Coefficient of Friction for Mass Sliding Down 60 degree Inclined Plane
Question: A block of mass m slides down the plane inclined at an angle 60o with an acceleration g/2 .Find the coefficient of kinetic friction. Solution: Finding the coefficient of friction As the block of mass m is moving on the inclined plane , the kinetic friction fk comes into play. The forces acting on…
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Train Retardation Calculation | Physics Problem Solution
Question: A train was moving at the rate of 54 Kmh-1 when brakes were applied. It came to rest within a distance of 225 m. Calculate the retardation produced in the train. Solution: Calculating the retardation Initial velocity(u): (Conversion from Kmh-1 to ms-1) $${54 \ \frac {km}{h}=54 \ (\frac{5}{18}) \ \frac{m}{s}}$$ $${u=15 \ \frac{m}{s}}$$ Final…
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