Normal reactions and loss of contact: check 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 8 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=16 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
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.
Normal reactions and loss of contact: review variant 1
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 9 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=27 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
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.
Normal reactions and loss of contact: check 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 9 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=27 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
Find the particle’s weight 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.
Normal reactions and loss of contact: review variant 2
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 10 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=40 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
Find the particle’s weight 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.
Normal reactions and loss of contact: check 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 10 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=40 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
If the upward applied force is doubled, find the new 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.
Normal reactions and loss of contact: review variant 3
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 3 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=3 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
If the upward applied force is doubled, find the new 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.
Normal reactions and loss of contact: check 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 3 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=3 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
If instead the original P acts vertically downward, find the 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.
Normal reactions and loss of contact: review variant 4
Difficulty: ★★☆Info
Maths4U Original · Short practice
A 4 kg particle rests on a horizontal support. A separate upward force \(\displaystyle P=8 N\) acts on it. Use \(\displaystyle g= \frac{10m}{s^{2}}\). Every part assumes the particle stays in contact; the changed forces below still allow this.
If instead the original P acts vertically downward, find the 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.