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Door knobs are fixed at the edge of the door to maximize the turning effect (torque) when opening or closing the door. If the knob were placed in the middle, the perpendicular distance from the pivot (hinges) would be reduced, requiring more force to operate the door. This would make opening and closing the door … Read more
A long spanner is used to open or tighten the nuts of a vehicle’s tyre because it provides a greater moment of force (torque) with less effort. The longer the spanner, the larger the perpendicular distance from the pivot point, which increases the turning effect. However, for a small nut, an extra-long wrench is not … Read more
Related Questions: Physical Quantities and Measurement Kinematics-mcq Dynamics-1 Dynamics-II Pressure and Deformation in Solids Work and Energy Density and Temperature Magnetism Nature of Science and Physics Q.1 How does physics play an important role in our life? Q.2 Estimate your age in minutes and seconds. Q.3 What base quantities are involved in these derived physical … Read more
Related Questions: Physical Quantities and Measurement Kinematics-mcq Dynamics-1 Dynamics-II Pressure and Deformation in Solids Work and Energy Density and Temperature Magnetism Nature of Science and Physics Q.1 How does physics play an important role in our life? Q.2 Estimate your age in minutes and seconds. Q.3 What base quantities are involved in these derived physical … Read more
Related Questions: Physical Quantities and Measurement Kinematics-mcq Dynamics-1 Dynamics-II Pressure and Deformation in Solids Work and Energy Density and Temperature Magnetism Nature of Science and Physics Q.1 How does physics play an important role in our life? Q.2 Estimate your age in minutes and seconds. Q.3 What base quantities are involved in these derived physical … Read more
Related Questions: Physical Quantities and Measurement Kinematics-mcq Dynamics-1 Dynamics-II Pressure and Deformation in Solids Work and Energy Density and Temperature Magnetism Nature of Science and Physics Q.1 How does physics play an important role in our life? Q.2 Estimate your age in minutes and seconds. Q.3 What base quantities are involved in these derived physical … Read more
Related Questions: Physical Quantities and Measurement Kinematics-mcq Dynamics-1 Dynamics-II Pressure and Deformation in Solids Work and Energy Density and Temperature Magnetism Nature of Science and Physics Q.1 How does physics play an important role in our life? Q.2 Estimate your age in minutes and seconds. Q.3 What base quantities are involved in these derived physical … Read more
Solve the following: 1. Calculate the work done in pushing a box with 150 N through a distance of 5 m. (Ans. 750 J) 2. A boy weighing 75 N jumps up and gains 300 J of gravitational potential energy. Find the height to which the boy will rise. (Ans. 4 m) 3. A 5 … Read more
Solve the following numerical questions. 1. Consider a spring with a spring constant of 8000 N/m. If a force of 500 N is applied to the spring, what will be the displacement of the spring? (Ans. 6.25 cm) 2. In a force multiplier, the small piston has a diameter of 15 cm and the large … Read more
On Earth, sucking through a straw reduces air pressure inside, allowing atmospheric pressure to push liquid up. On the Moon, there is no atmospheric pressure, so there is no external force to push the liquid into the straw, making it impossible to sip water. Related Questions: How are we able to break a metal wire … Read more