PHYS 261 Pre Lab-Questions and Answers|
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Two carts collide and bounce off each other. If there are no external forces acting on the system,
which of the following is true: The total kinetic energy can change during the collision but
the total momentum of the carts must be the same before and after the collision
A cart with mass 0.13 kg and velocity 0.54 m/s collides on an air-track with a cart with mass 0.11
kg and velocity -0.74 m/s. What is the final velocity (in m/s) of the two carts if they stick
together? -0.0467
Lab 4 The principle of conservation of momentum: The total momentum of a closed
system that has no net external force acting on it is constant
No net external force, total momentum constant
Inelastic collision- Objects bounce off each other, but total kinetic energy before the collision is
different from that after the collision
Elastic collision- Objects bounce off each other and the total kinetic energy before the collision is
the same as after the collision
Perfectly inelastic collision- Two objects collide and stick together resulting in the maximum
kinetic energy being lost (converted to potential energy or heat in the objects)
, Drop mass straight down into a cup
Small drag, small tilts, some external force
What provides the vertical force to balance the force of gravity on the pendulum bob?
tension in the string
What is the maximum height y that the pendulum can reach in this experiment? yo+L
Using Equation (11), find the theoretical value for the rotation period t for a pendulum bob with
orbital radius r = 0.11 m, length L = 0.272 m, yo = 0.02 m and extension arm length ro = 0.02 m.
Use g = 9.801 m/s2. 1.1241
Lab 5 Purpose: measure an object undergoing centripetal acceleration
A body is accelerating whenever the magnitude or direction of its velocity vector is changing
0.9 radians is equal to how many degrees? 51.5677
The small angle approximation says that \sin\left(\theta\right)\:\approx\theta (this is true if \thetaθ
is measured in radians, but not if \thetaθ is measured in degrees). Find the percentage error
\frac{\left(\sin\left(\theta\right)-\theta\right)}{\theta}(sin(θ)−θ)θ this approximation introduces
for an angle of 0.11 radians. Note your number should be negative and you need to express it as a
percentage (multiply the above expression by 100%). -0.2015
Latest Update
Two carts collide and bounce off each other. If there are no external forces acting on the system,
which of the following is true: The total kinetic energy can change during the collision but
the total momentum of the carts must be the same before and after the collision
A cart with mass 0.13 kg and velocity 0.54 m/s collides on an air-track with a cart with mass 0.11
kg and velocity -0.74 m/s. What is the final velocity (in m/s) of the two carts if they stick
together? -0.0467
Lab 4 The principle of conservation of momentum: The total momentum of a closed
system that has no net external force acting on it is constant
No net external force, total momentum constant
Inelastic collision- Objects bounce off each other, but total kinetic energy before the collision is
different from that after the collision
Elastic collision- Objects bounce off each other and the total kinetic energy before the collision is
the same as after the collision
Perfectly inelastic collision- Two objects collide and stick together resulting in the maximum
kinetic energy being lost (converted to potential energy or heat in the objects)
, Drop mass straight down into a cup
Small drag, small tilts, some external force
What provides the vertical force to balance the force of gravity on the pendulum bob?
tension in the string
What is the maximum height y that the pendulum can reach in this experiment? yo+L
Using Equation (11), find the theoretical value for the rotation period t for a pendulum bob with
orbital radius r = 0.11 m, length L = 0.272 m, yo = 0.02 m and extension arm length ro = 0.02 m.
Use g = 9.801 m/s2. 1.1241
Lab 5 Purpose: measure an object undergoing centripetal acceleration
A body is accelerating whenever the magnitude or direction of its velocity vector is changing
0.9 radians is equal to how many degrees? 51.5677
The small angle approximation says that \sin\left(\theta\right)\:\approx\theta (this is true if \thetaθ
is measured in radians, but not if \thetaθ is measured in degrees). Find the percentage error
\frac{\left(\sin\left(\theta\right)-\theta\right)}{\theta}(sin(θ)−θ)θ this approximation introduces
for an angle of 0.11 radians. Note your number should be negative and you need to express it as a
percentage (multiply the above expression by 100%). -0.2015
