Contact forces in a moving lift: check 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 4 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{4m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the normal reaction on the block in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: review variant 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 5 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{1m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the normal reaction on the block in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: check 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 5 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{1m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the scale’s displayed mass in kg.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: review variant 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 6 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{2m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the scale’s displayed mass in kg.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: check 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 6 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{2m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the magnitude of the force exerted by the block on the floor, in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: review variant 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 7 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{3m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
Find the magnitude of the force exerted by the block on the floor, in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: check 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 7 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{3m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
In a separate stage with upward acceleration \(\displaystyle \frac{3m}{s^{2}}\), find the normal reaction in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.
Contact forces in a moving lift: review variant 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 8 kg block stays on the horizontal floor of a lift that is moving upward and slowing at \(\displaystyle \frac{4m}{s^{2}}\). Use \(\displaystyle g= \frac{10m}{s^{2}}.A\) scale is calibrated to display reaction divided by g as a mass reading.
In a separate stage with upward acceleration \(\displaystyle \frac{4m}{s^{2}}\), find the normal reaction in N.
Enter one exact number or fraction unless the question specifies rounding. Use the requested units and positive direction; enter the number without its unit. Angles here use degrees. Give full reasoning separately for written problems.