A marble is allowed to roll down an inclined plane from a fixed height. At the foot of the-inclined plane, it moves on a horizontal surface $(a)$ covered with silk cloth $(b)$ covered with a layer of sand and $(c)$ covered with a glass sheet. On which surface, will the marble move the shortest distance. Give reason for your answer.

Tutorialspoint

Simply Easy Learning

---

Updated on 10-Oct-2022 13:29:12

0 Views

Print Article

• Related Articles
• A toy car released with the same initial speed will travel farthest on$(a)$. muddy surface$(b)$. polished marble surface$(c)$. cemented surface$(d)$. brick surface
• (a) What happens to the work done when the displacement of a body is at right angles to the direction of force acting on it? Explain your answer.(b) A force of $50\ N$ acts on a body and moves it a distance of $4\ m$ on a horizontal surface. Calculate the work done if the direction of force is at an angle of $60^{o}$ to the horizontal surface.
• (a) With the help of a labelled diagram, explain the construction and working of a solar cooker.(b) Why is the solar cooker box painted black from inside?(c) Why is the solar cooker box covered with a glass sheet?
• A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same, ball travel longer distance before coming to rest, he may $(a)$. spread a carpet on the wooden surface$(b)$. cover the ball with a piece of cloth$(c)$. sprinkle talcum powder on the wooden surface$(d)$. sprinkle sand on the wooden surface
• To find downward force along inclined plane on a roller due to gravitational pull of the earth and its relationship with the angle of inclination
• A car moves with a speed of 40 km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. Calculate the total distance covered.
• A ray of light is incident on a plane mirror making an angle of 90° with the mirror surface. The angle of reflection for this ray of light will be:(a) 45° (b) 90° (c) 0° (d) 60°
• One-half of a convex lens is covered with a black paper. Will this lens produce a complete image of the object? Verify your answer experimentally. Explain your observations.
• A trolley while going down an inclined plane has an acceleration of 2cm/s2. What will be it's velocity 3 seconds after the start?
• A trolley going down an inclined plane has an acceleration of $2 cm s^{-2}$. What will be the velocity 3 seconds after the start?
• A circular track has a circumference of $3140\ m$ with AB as one of its diameter. A scooter moves from A to B alone the circular path with a uniform speed of $10\ m/s$. Find the distance covered by the scooter.
• A car moves with a speed of 40km/h for 15 minutes and then with a speed of 60 km/h for the next 15 minutes. Find the total distance covered by the car in these 30 minutes.
• A plane mirror is inclined at an angle theta (θ) with horizontal as shown in the figure. If a ray incident from 10⁰ above horizontal becomes vertical after reflection from this mirror, then find theta (θ)."\n
• There are 6 marbles in a box with numbers from 1 to 6 marked on each of them.$(i)$. What is the probability of drawing a marble with the number 2?$(ii)$. What is the probability of drawing a marble with the number 5?
• A vertical tower stands on a horizontal plane and is surmounted by a vertical flagstaff of height $h$. At a point on the plane, the angles of elevation of the bottom and the top of the flag staff are $\alpha$ and $\beta$, respectively. Then find the height of the tower.