Statics
Physics ⇒ Mechanics
Statics starts at 9 and continues till grade 12.
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See sample questions for grade 10
A 10 N force is applied perpendicular to a door at a distance of 0.8 m from the hinge. What is the moment about the hinge?
A 2 m long uniform plank weighing 100 N is supported at one end. Where should a 200 N load be placed so that the plank remains horizontal?
A 50 N force acts at a distance of 0.4 m from a pivot. Calculate the moment produced by the force.
A ladder of length 5 m rests against a smooth wall, making an angle of 60° with the ground. If the weight of the ladder is 250 N, acting at its center, calculate the horizontal force exerted by the wall on the ladder.
A uniform beam of length 4 m and weight 200 N is supported at its ends. A 400 N weight is placed 1 m from the left end. Calculate the reaction force at the right support.
A uniform meter rule is balanced at the 40 cm mark when a 100 g mass is hung at the 10 cm mark. Find the mass of the meter rule.
Define the term 'couple' in the context of statics.
Describe the difference between stable, unstable, and neutral equilibrium.
Describe what happens to the stability of an object if its center of gravity is raised.
Explain why a tightrope walker carries a long pole.
Explain why a wider base increases the stability of an object.
State the principle of moments.
A 2 m long rod is pivoted at one end and held horizontally by a force F applied vertically upward at the other end. If the rod weighs 80 N, calculate the value of F required to keep the rod in equilibrium.
A 5 m long uniform beam of weight 400 N is supported at its ends. A 200 N weight is suspended 1 m from the right end. Calculate the reaction force at the left support.
A uniform beam of length 6 m and weight 300 N is supported horizontally at its ends. A 600 N load is placed 2 m from the left end. Calculate the reaction force at the left support.
A uniform rectangular plate of mass 2 kg is suspended from one corner. Describe the position of its center of gravity relative to the point of suspension.
A uniform rod of length 1.5 m and mass 3 kg is supported horizontally by two supports placed 0.2 m from each end. Calculate the force exerted by each support.
Explain why a book placed on a sloping surface may start to slide if the angle of the slope is increased beyond a certain point.
State two conditions that must be satisfied for a body to be in static equilibrium.
A 3 m long uniform rod of mass 6 kg is suspended horizontally by two vertical strings attached at its ends. If a 12 kg mass is hung 1 m from the left end, calculate the tension in the right string. (Take g = 10 m/s2)
