Homework Statement
Question 42 in particular.
Homework Equations
No idea. The Attempt at a Solution
The graph depicts an inequality of sorts, like y >= x and y >= -x as well as y <= x and y <= -x. Beyond these basic deductions (which are probably wrong also), I've not a scintilla of clue...
Homework Statement
A 60.0 kg person is stuck against the inner wall of a rotating cylinder.
The radius of the cylinder is 10.0 m and the period is 2.00s. What is the
minimum coefficient of static friction required to stop him from sliding?
Homework Equations
Fnet = (4m∏^2R)/T^2...
The mass of the sand---the magnitude of the applied force---can be increased by a infinitesimally small amount to cause acceleration; thus allowing for the approximation of the mass that the question requires?
Homework Statement
A 28.0-kg block is connected to an empty 1.00-kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.450 while the coefficient of kinetic friction is 0.320. Sand is gradually added to the bucket until...
Homework Statement
The pendulum bob in Figure 6.11 must circle
the rod interrupting its swing, and the string
must remain taut at the top of the swing. How
far up must the bob be raised before releasing
it to accomplish these goals?
Homework Equations
Potential Energy = mgh
Kinetic...
Gravity. Which on an inclined plane like this, can be divided into two components; perpendicular and parallel. Calculating the degree of the ramp I find 22 degrees by arctan1.2/3.0. Using cos22 x 1078 I find the perpendicular component of gravity,1000N, which is the same as the normal force...
Homework Statement
A girl uses a 3.0 m long ramp to push her 110 kg motorbike up to a trailer, the floor of which
is 1.2 m above the ground. How much work is done on the motorbike?
Homework Equations
W=FD where W is work, F is force and D is distance travelled.
The Attempt at a...