Tag: GRADE 11 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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Cricketer’s Ball Throw: Calculating Maximum Height
Question: A cricketer can throw a ball to a maximum horizontal distance of 100 m. How much high above the ground can the cricketer throw the same ball? Solution:Calculating the maximum height of the ball Projectile motion: Maximum horizontal distance(Range): Maximum range is attained when the ball is projected at an angle of 45o with…
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Determining Coefficient of Static Friction at 15 Degree Inclination
Question: A mass of 4 Kg rests on a horizontal plane.The plane is gradually inclined until an angle 15o with the horizontal, the mass just begins to slide.What is the coefficient of static friction between the block and the surface. Solution: Mass of the block 4 Kg Angle of inclination $${\theta=15^\circ}$$ At a particular angle…
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