You've got an unknown force pulling up, and a drag force acting down. Anything else acting down?shiri said:Calculate the force required to pull a copper ball of radius 3.00 cm upward through a fluid at the constant speed 9.00 cm/s. Take the drag force to be proportional to the speed, with proportionality constant 0.950 kg/s. Ignore the buoyant force.
For this question, do I have to find the mass of a copper ball first, right?
Cyclovenom said:Hello shiri, remember when the speed is constant we have the special case of 1st Law of Newton.
The formula for calculating the force required to pull a copper ball upward is F = mg, where F is the force in newtons, m is the mass of the copper ball in kilograms, and g is the acceleration due to gravity in meters per second squared.
The mass of the copper ball can be determined by using a scale or balance to measure its weight in kilograms. Alternatively, the density of copper (8.96 g/cm3) can be used to calculate the mass by multiplying the density by the volume of the ball.
The acceleration due to gravity is a constant value, approximately 9.8 m/s2, which represents the rate at which objects accelerate towards the Earth's surface under the influence of gravity.
Yes, the unit for force is newtons (N). Other common units include pounds (lb) and kilograms (kg).
Yes, the force required to pull a copper ball upward can change depending on factors such as the mass of the ball, the acceleration due to gravity, and the angle or direction of the pull.